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Design scheme for wireless sensor network sector protocol based on CDMA and TDMA

A design scheme, sensor network technology, applied in transmission systems, time division multiplexing systems, data exchange through path configuration, etc. Efficiency, alleviating the constraints of frequency band resources and energy resources, the effect of delaying the life cycle

Inactive Publication Date: 2008-08-06
JIAXING WIRELESS SENSOR NETWORKS CENT CAS
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Problems solved by technology

[0003] Aiming at the problem that the spectrum efficiency and energy efficiency of the current wireless sensor network protocols are not high, the present invention proposes a clustered sensor network protocol design scheme based on code division multiple access CDMA and time division multiple access TDMA dynamic time slot allocation, which can Effectively improve the spectrum efficiency and energy efficiency of the system, alleviate the limitations of frequency band resources and energy resources, and are of great significance for promoting the practical application of wireless sensor networks and mobile ad hoc networks

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  • Design scheme for wireless sensor network sector protocol based on CDMA and TDMA

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] As shown in Figure 1, the sensor network nodes are divided into several clusters according to a certain strategy, which are represented by dotted lines. The red hexagon is the cluster head node, which is responsible for the maintenance of intra-cluster node services, time slot allocation and inter-cluster business coordination. , the green circles are ordinary nodes in the cluster, and the blue octagons are sink nodes with less energy consumption constraints. The system assigns each cluster a spread spectrum code word with relatively good self-reciprocity and cross-correlation, so that the services of multiple cluster nodes can be concurrent, and the nodes in the cluster share this code word. Each cluster is divided into several by the cluster head according to the business requirements. time slots, and use the dynamic slot reservation strategy t...

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Abstract

The invention discloses a clustering sensor network protocol design proposal on the basis of the CDMA and the TDMA DTSA. The proposal clusters the sensor network nodes according to certain strategy and distributes one orthogonal OVSF for each cluster to realize the concurrence of a plurality of clusters. The node in the cluster divides a plurality of time slots according to the service conditions. The dynamic time slot subscription strategy is adopted to distribute the time slots, thereby realize that a plurality of nodes work at the same time. Therefore, the frequency spectrum efficiency and the energy efficiency of the system are raised and the limits on the frequency band resource and the energy resource are released.

Description

technical field [0001] The invention belongs to the design of wireless transmission protocol, and the proposed protocol is applicable to the fields of wireless sensor network, mobile ad hoc network and the like. Background technique [0002] Wireless sensor network is a network system that integrates information monitoring, data processing and wireless communication. The number of randomly arranged nodes is tens of thousands, and the distribution is relatively dense. Especially for wireless sensor networks such as military reconnaissance, environmental monitoring, and public safety, the design scale Generally, they are large, and the nodes are prone to failure, resulting in changes in the network topology. At the same time, there are four limited characteristics of energy, communication, computing, and storage. How to solve the problem of these resource constraints is a difficult problem for the practical application of wireless sensor networks. Code division multiple acces...

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Application Information

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IPC IPC(8): H04L29/06H04L12/28H04J3/16
Inventor 邱云周刘海涛王营冠姜建朱明华
Owner JIAXING WIRELESS SENSOR NETWORKS CENT CAS
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